
.header_header{
    width: 100%;
    height: .8rem;
    line-height: .8rem;
    background-color: #ff6445;
    color: #f1f1f1;
    font-size: 0.25rem;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 10;
    /* margin-bottom: .5rem; */
}
.header_header .back{
    position: absolute;
    left: 0.2rem;
    top: 0;
    z-index: 10;
}
.header_header h3{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    text-align: center;
    top: 0;
    z-index: 1;
}
.header_header .register{
    position: absolute;
    right: 0.2rem;
    top: 0;
    z-index: 10;
}